1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* Copyright © 2005 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Red Hat, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Red Hat, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Carl D. Worth <cworth@cworth.org>
*/
/* Bug history
*
* 2005-04-11 Carl Worth <cworth@cworth.org>
*
* It appears that calling cairo_show_surface after cairo_translate
* somehow applies the translation twice to the surface being
* shown. This is pretty easy to demonstrate by bringing up xsvg on
* an SVG file with an <image> and panning around a bit with the
* arrow keys.
*
* This is almost certainly a regression, and I suspect there may be
* some interaction with the fix for move-to-show-surface.
*
* 2005-04-12 Carl Worth <cworth@cworth.org>
*
* I committed a fix for this bug today.
*/
#include "cairo-test.h"
static cairo_test_draw_function_t draw;
static const cairo_test_t test = {
"translate-show-surface",
"Tests calls to cairo_show_surface after cairo_translate",
2, 2,
draw
};
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *surface;
uint32_t colors[4] = {
0xffffffff, 0xffff0000,
0xff00ff00, 0xff0000ff
};
int i;
for (i=0; i < 4; i++) {
surface = cairo_image_surface_create_for_data ((unsigned char *) &colors[i],
CAIRO_FORMAT_RGB24,
1, 1, 4);
cairo_save (cr);
{
cairo_translate (cr, i % 2, i / 2);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
}
cairo_restore (cr);
cairo_surface_destroy (surface);
}
return CAIRO_TEST_SUCCESS;
}
int
main (void)
{
return cairo_test (&test);
}
|
